<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title></title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        .nav{
            width: 1000px;
            height: 400px;
            background-color: pink;
            margin: 100px auto;
        }
        .right{
            height: 400px;
            width: 800px;
            float: right;
            background-color: white;
        }
        .left{
            height: 400px;
            width: 200px;
            float: left;
            background-color: blueviolet;
        }
        .right>div{
            float: left;
            height: 180px;
            width: 190px;
            background-color: gray;
            margin-left: 10px;
            margin-bottom: 40px;
        }
    </style>
</head>

<body>
   <div class="nav">
    <div class="right">
        <div>1</div>
        <div>2</div>
        <div>3</div>
        <div>4</div>
        <div>4</div>
        <div>4</div>
        <div>4</div>
        <div>4</div>
    </div>
    <div class="left">
    </div>
   </div>
</body>

</html>